class_docstr: A structured environment which returns random actions
code: def clone_from(self, env: "DummyStructuredEnvironment") -> None:
      self.maze_env.clone_from(env.maze_env)
      self.last_obs = env.last_obs
      self._sub_step_index = env._sub_step_index
  
imports: from typing import Any, Dict, Union, Tuple, Callable, Optional
  import gym
  import numpy
  from maze.core.env.maze_env import MazeEnv
  from maze.core.env.structured_env import StructuredEnv, StepKeyType, ActorID
  from maze.core.env.structured_env_spaces_mixin import StructuredEnvSpacesMixin
  from maze.core.wrappers.wrapper import Wrapper
label_desc: Use image node_id 15 for calling the DummyStructuredEnvironment obj's underlying member method code with example usage: obj.clone_from(env) without return types